【摘要】 利用1971~2000年河南省32个农业气象站逐年气象资料,选取年平均气温、极端最高气温、极端最低气温、无霜期、降水量、相对湿度、蒸发量等7个气候要素,对河南省气候变化总体趋势和8个气候区的气候变化趋势进行分析。结果表明全省总体上每10年:年平均气温上升0.34℃,极端最高气温下降0.25℃,极端最低气温上升0.5℃,无霜期延长3天,年降水量增加5.0 mm,相对湿度增加0.08%,蒸发量减少86.8 mm。总体气候趋向温和、湿润,气候条件趋于改善。8个气候区中,7个气候区总体气候条件趋于暖湿,仅1个气候区总体气候条件趋于暖干。更多还原

【Abstract】 The trend of climate change in eight climatic regions in Henan Province is analyzed through selecting mean temperature,extreme maximum temperature,extreme minimum temperature,frost-free period,precipitation,relative humidity,evaporation,etc.,from 1971 to 2000 in 32 agrometeorological stations.The results show that the annual mean temperature increased 0.34 ℃ per ten years;extreme maximum temperature decreased 0.25 ℃ per ten years;extreme minimum temperature increased 0.5 ℃ per ten years;frost-free period prolonged 3 days per ten years;annual precipitation increased 5.0 mm per ten years;relative humidity increased 0.08% per ten years;and evaporation reduced 86.8 mm per ten years.The general climatic trend is becoming better,warmer and wetter,but there are different tendencies in 8 climatic regions: 7 among 8 climatic regions are getting warmer and moister,and one is warmer and drier.更多还原